Alert archive / Indiana / Flash Flood Warnings in 1990

Flash Flood Warning 8, NWS Northern Indiana

August 20, 1990Huntington County, Indiana

NWS Northern Indiana issued this flash flood warning at Aug 20, 1990, 2:51 PM EST for Huntington County, Indiana. It was in force for 3 hr.

The area

The counties it named.

The facts

Issued
Aug 20, 1990, 2:51 PM EST (19:51 UTC)
Expired
Aug 20, 1990, 6:00 PM EST
In force
3 hr
Issued by
NWS Northern Indiana
Area
Whole counties

County Huntington County, IN

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

The nearest sounding before it

Dayton/James M C, OH (KDAY), launched 12:00Z, 7.9 hours before the alert went out and 150 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Dayton/James M C, OH at 12:00Z on 1990-08-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 238 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Dayton/James M C, OH at 12:00Z on 1990-08-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 73 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
238 J/kg
Mixed-layer CIN
-146 J/kg
Mixed-layer LCL
672 m above ground
0-6 km bulk shear
24 kt
0-1 km storm-relative helicity
73 m²/s²
0-3 km storm-relative helicity
88 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KFWA 201951
FFWFWA
INC053-069-202300-

BULLETIN - IMMEDIATE BROADCAST REQUESTED/EBS ACTIVATION REQUESTED 
FLASH FLOOD WARNING 
NATIONAL WEATHER SERVICE FORT WAYNE IN
251 PM EST MON AUG 20 1990

THE NATIONAL WEATHER SERVICE HAS ISSUED A FLASH FLOOD WARNING 
EFFECTIVE UNTIL 600 PM EST FOR PEOPLE IN THE FOLLOWING 
COUNTIES

   IN THE NORTHEAST PART OF INDIANA
      GRANT...SOUTHERN HUNTINGTON

AT 246 PM EST THUNDERSTORMS WITH VERY HEAVY RAINS WERE MOVING INTO
GRANT COUNTY OF NORTHEAST INDIANA. THESE THUNDERSTORMS WERE MOVING
NORTHEAST AND ACROSS ALREADY SATURATED GROUND. AS THESE THUNDERSTORM
S MOVE ACROSS GRANT AND INTO SOUTHERN HUNTINGTON COUNTIES RAINFALLS
OF 1 TO 3 INCHES COULD BE PRODUCED.

THESE VERY HEAVY RAINFALLS WILL PRODUCE FLOODING OF STREAMS AND
OF ROADWAYS.

A FLASH FLOOD WARNING MEANS FLOODING IS IMMINENT.  TAKE NECESSARY
PRECAUTIONS AGAINST FLOODING IMMEDIATELY.

DO NOT ATTEMPT TO CROSS A FLOWING STREAM ON FOOT OR IN A VEHICLE.
RAPIDLY RISING WATER MAY SWEEP YOU AWAY.

DURING HEAVY RAINS...KEEP SMALL CHILDREN AWAY FROM OPEN STORM
DRAINS...WATER CATCHMENTS...STREAMS AND WATERWAYS.  SHALLOW...GENTLY
FLOWING WATER CAN BECOME A RAGING TORRENT IN A MATTER OF MINUTES.

MARSHALL

What forecasters said that day

The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

In the hours before

Special weather statement, Aug 20, 11:16 AM EST, 3 hours 35 minutes before
MIZ001-007-008-INZ001-002-004-005-201830-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SOUTH BEND IN
1115 AM EST MON AUG 20 1990

...THUNDERSTORMS REDEVELOPING AND INTENSIFING OVER PULASKI...FULTON
AND SOUTHERN MARSHALL COUNTIES IN NORTHERN INDIANA...

AT 1055 AM EST...SHOWERS AND THUNDERSTORMS WERE LOCATED FROM JUST SOUTH
OF KNOX INDIANA...30 MILES SOUTHWEST OF SOUTH BEND...TO JUST SOUTH OF
ROCHESTER INDIANA...ABOUT 50 MILES SOUTH OF SOUTH BEND.

A FLASH FLOOD WATCH REMAINS IN EFFECT FOR THE NORTHERN THIRD OF INDIANA
FOR TODAY.

THESE STORMS WILL PRODUCE HEAVY DOWNPOURS...PONDING AND FLOODING...IN
THE ALREADY SATURATED AREA AND DANGEROUS LIGHTNING.

REPORT ANY FLOODING TO LAW ENFORCEMENT OFFICERS. IF HIGH WATER IS NEAR
LEAVE FOR HIGHER GROUND BEFORE YOUR ESCAPE ROUTE IS FLOODED.
MOWERY
Special weather statement, Aug 20, 11:29 AM EST, 3 hours 22 minutes before
INZ003-005-006-OHZ001-201730-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE FORT WAYNE IN
1130 AM EST MON AUG 20 1990

...THUNDERSTORMS WITH BRIEF HEAVY RAINS MOVING ACROSS PORTIONS OF
NORTHEAST INDIANA.

A FLASH FLOOD WATCH CONTINUES FOR NORTHEAST INDIANA TODAY.

AT 1125 AM EST THUNDERSTORMS WITH BRIEF HEAVY RAINS EXTENDED FROM
25 MILES NORTHWEST OF FORT WAYNE TO 10 MILES WEST OF FORT WAYNE IN
NORTHEAST INDIANA. OTHER THUNDERSTORMS WITH HEAVY RAINS EXTENDED FROM
35 MILES SOUTHWEST OF FORT WAYNE TO 40 MILES WEST OF FORT WAYNE.

THESE THUNDERSTORMS WERE MOVING EAST AT 20 MPH AND CONTAINED DANGEROUS
LIGHTNING AND GUSTY WINDS. THESE THUNDERSTORMS MAY PRODUCE BRIEF
FLOODING OF LOW LYING( ROADWAYS AND UNDERPASSES.

BY 1230 PM EST/130 PM EDT THESE THUNDERSTORMS WILL EXTEND FROM NEAR
AUBURN TO 10 MILES NORTHEAST OF FORT WAYNE AND FROM 15 MILES WEST
OF FORT WAYNE TO 10 MILES NORTHWEST OF COLUMBIA CITY INDIANA.

MARSHALL
Special weather statement, Aug 20, 12:32 PM EST, 2 hours 19 minutes before
INZ003-005-006-OHZ001-201830-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE FORT WAYNE IN
1225 PM EST MON AUG 20 1990

...THUNDERSTORMS WITH BRIEF HEAVY RAINS MOVING ACROSS PORTIONS OF
NORTHEAST INDIANA.

A FLASH FLOOD WATCH CONTINUES FOR NORTHEAST INDIANA TODAY.

AT 1223 PM EST THUNDERSTORMS WITH BRIEF HEAVY RAINS EXTENDED FROM
50 MILES NORTHWEST OF FORT WAYNE TO 40 MILES NORTH OF FORT WAYNE IN
NORTHEAST INDIANA. OTHER THUNDERSHOWERS WERE OCCURRING TO THE NORTH
AND WEST OF A LINE EXTENDING FROM 25 MILES SOUTHWEST OF FORT WAYNE
TO 30 MILES NORTHEAST OF FORT WAYNE.

THESE THUNDERSTORMS WERE MOVING NORTHEAST AT 20 MPH AND CONTAINED
DANGEROUS LIGHTNING AND GUSTY WINDS.

BY 130 PM EST THE THUNDERSTORMS WILL EXTEND FROM 5 MILES NORTHWEST
OF LAGRANGE TO ANGOLA. THUNDERSHOWERS WILL BE OCCURRING TO THE NORTH
OF A LINE EXTENDING FROM FORT WAYNE TO DEFIANCE OHIO.

MARSHALL
Special weather statement, Aug 20, 1:26 PM EST, 1 hour 25 minutes before
INZ003-005-006-OHZ001-201930-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE FORT WAYNE IN
125 PM EST MON AUG 20 1990

...A THUNDERSTORM NEAR COLUMBIA CITY INDIANA HAD WEAKENED IN INTENSITY...

...THE FLASH FLOOD WATCH HAS CANCELLED FOR NORTHEAST INDIANA...

AT 125 PM EST...THIS STORM 20 MILES NORTHWEST OF FORT WAYNE HAD BRIEF
HEAVY RAIN AND DANGEROUS LIGHTNING.  IT IS MOVING NORTHEAST AT 20 MPH.
BY 230 PM EST...THE STORM WILL CONTINUE TO WEAKEN AS IT MOVES BETWEEN
HUNTERTOWN AND AUBURN INDIANA.

OTHER THUNDERSHOWERS CONTINUE FARTHER NORTH...BETWEEN LAGRANGE AND
ANGOLA INDIANA.  THEY ALSO WERE MOVING NORTHEAST AT 20 MPH AND WILL
CONTINUE IN THE SAME AREA OVER THE NEXT HOUR.

REMEMBE!R...TO STAY INSIDE DURING THUNDERSTORMS.
.
WITSAMAN
Special weather statement, Aug 20, 1:52 PM EST, 59 minutes before
MIZ001-007-008-INZ001-002-004-005-201830-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SOUTH BEND IN
150 PM EST MON AUG 20 1990

...FLASH FLOOD WATCH FOR NORTHERN INDIANA CANCELLED...

SHOWERS AND A FEW THUNDERSHOWERS WILL CONTINUE OVER NORTHERN INDIANA
BUT RAINFALL AMOUNTS ARE NOT EXPECTED TO BE SUFFICIENT TO CAUSE FLASH
FLOODING.

FLOOD WARNINGS CONTINUE IN EFFECT FOR THE KANKAKEE AND TIPPECANOE RIVERS
IN NORTHERN INDIANA WHERE VERY HEAVY RAINFALL HAS OCCURRED SINCE FRIDAY
NIGHT.  RECORD OR NEAR RECORD FLOODING IS IN PROGRESS AT SOME POINTS
ALONG THESE RIVERS.

AT 1 45 PM EST...SHOWERS AND A FEW THUNDERSHOWERS EXTENDED FROM SOUTHERN
LAKE MICHIGAN EASTWARD ACROSS SOUTHWEST LOWER M]ICHIGAN AND NORTHERN
INDIANA.
.
THE SHOWERS AND THUNDERSHOERS WERE MOVING NORTHEAST AROUND 20 MPH.
MOWERY
Special weather statement, Aug 20, 2:12 PM EST, 39 minutes before
INZ003-005-006-OHZ001-202000-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE FORT WAYNE IN
210 PM EST MON AUG 20 1990

...STRONG THUNDERSTORMS MOVING INTO PORTIONS OF NORTHEAST INDIANA...

AT 208 PM EST STRONG THUNDERSTORMS EXTENDED FROM 30 MILES SOUTHWEST
OF MARION TO 35 MILES WEST OF MARION IN NORTHEAST INDIANA.

THESE THUNDERSTORMS WERE MOVING NORTHEAST AT 20 MPH AND CONTAINED
SMALL HAIL...DANGEROUS LIGHTNING...STRONG GUSTY WINDS AND VERY yHEAVY
RAINS. THESE STORMS WILL PRODUCE BRIEF FLOODING OF LOW LYING ROADWAYS
AND UNDERPASSES.

BY 3 PM EST THESE THUNDERSTORMS WILL EXTEND FROM 35 MILES SOUTHWEST
OF FORT WAYNE OR JUST NORTH OF WABASH TO 10 MILES SOUTHEAST OF MARION.

MARSHALL

The office that day

Everything else NWS Northern Indiana issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 20, 2:51 PM ESTFlash Flood WarningIWXGrant112 min
Aug 20, 3:53 PM ESTFlash Flood WarningIWXBlackford, Wells50 min

Nearby

Flash Flood Warnings in Indiana, 1990Every flash flood warning in 1990

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive.